Amazed Posted December 27, 2013 Report Share Posted December 27, 2013 Hi all hope you all are having a lovely break. Whilst milling about on the internet have been reading about abut the different types of rifling. And a few types have seen before like cut and button and some older ones like withworth but there are one like polygonic , 5r and ratchet. Are these just a fad ? Or is there so merit in there design ? And are there any really odd ones worth a mention ? Karl. Quote Link to comment Share on other sites More sharing options...
manton Posted December 27, 2013 Report Share Posted December 27, 2013 Cut and button are not types of rifling but like hammer forged are methods of producing rifling each can be used to produce a number of styles of rifling . Some of the more unusual styles of rifling are Whitworth where the bore is a hexagon and Lancaster oval bore where it is elliptical and looks like a smooth bore. Quote Link to comment Share on other sites More sharing options...
Amazed Posted December 27, 2013 Author Report Share Posted December 27, 2013 Thank you call me sad but I find it quite interesting this polygonic is the one that's grabbing my attention. Quote Link to comment Share on other sites More sharing options...
Redgum Posted December 27, 2013 Report Share Posted December 27, 2013 Most of the 'types' of rifling are the way in which its cut or forged, some are more precise than others, differant companies use differant methods and one governing factor is the cost in off the shelf hunting rilfes. Have a look on the internet and you will find stacks of info. Quote Link to comment Share on other sites More sharing options...
Amazed Posted December 27, 2013 Author Report Share Posted December 27, 2013 Have done some google surfing and was going to talk with you abut it, just wanted others takes on the subject Quote Link to comment Share on other sites More sharing options...
Underdog Posted December 27, 2013 Report Share Posted December 27, 2013 I always wondered why the polygonal is not more common! U. Quote Link to comment Share on other sites More sharing options...
Gunnerbob Posted December 27, 2013 Report Share Posted December 27, 2013 Segmental and concentric, both used in British military rifles at various times. Quote Link to comment Share on other sites More sharing options...
reggiegun Posted December 27, 2013 Report Share Posted December 27, 2013 To try and simplyfy the mental picture, imagine a circular bullet in a pentagonal bore and think about the 'gaps' that effectively have to be sealed to make it (VERY) gas tight. Hills and Valleys man Quote Link to comment Share on other sites More sharing options...
Underdog Posted December 27, 2013 Report Share Posted December 27, 2013 Don't get ya' Fister! What has a pentagon got to do with it? http://www.google.co.uk/imgres?sa=X&rls=com.microsoft:en-gb:IE-SearchBox&rlz=1I7_____en-GB&biw=1024&bih=567&tbm=isch&tbnid=ezFmMD9j_j_dXM:&imgrefurl=http://glock.pro/glock-pistols/1924-polygonal-hexagonal-octogonal-rifling-what-differance.html&docid=EOQOjF9ec7AzhM&imgurl=http://uscca-downloads.s3.amazonaws.com/CCM/2010/april/cantrell/header.jpg&w=600&h=281&ei=xO29UuGPBaaM7Qb8koAQ&zoom=1&iact=rc&dur=381&page=1&tbnh=132&tbnw=284&start=0&ndsp=14&ved=1t:429,r:7,s:0,i:104&tx=68&ty=53 Quote Link to comment Share on other sites More sharing options...
Amazed Posted December 27, 2013 Author Report Share Posted December 27, 2013 Hills and Valleys man From what little info I could get that I think the problem is Trust Quote Link to comment Share on other sites More sharing options...
Underdog Posted December 27, 2013 Report Share Posted December 27, 2013 From what little info I could get that I think the problem is Trust Trust??? U. Quote Link to comment Share on other sites More sharing options...
Amazed Posted December 27, 2013 Author Report Share Posted December 27, 2013 Trust??? U. As the br crew wouldn't trust the hammer forging being relaxed correctly, Thats what I got when I dug about. Some good info and perspectives here am likening this thread Quote Link to comment Share on other sites More sharing options...
Underdog Posted December 27, 2013 Report Share Posted December 27, 2013 oh the br fellers.....if one of them pharts wrong on the line they will want a wind sock rammed up it! U Quote Link to comment Share on other sites More sharing options...
Amazed Posted December 27, 2013 Author Report Share Posted December 27, 2013 oh the br fellers.....if one of them pharts wrong on the line they will want a wind sock rammed up it! U Quote Link to comment Share on other sites More sharing options...
manton Posted December 28, 2013 Report Share Posted December 28, 2013 Whitworth hexagonal bores were originally designed to use a mechanically fitting hexagon bullet which caused the system to be a bit of a blind alley in rifle design. The only real advantage to come from Whitworths work was the realisation that a faster rifling twist and the reduction in bore size compared to the P53 Enfield .577 were beneficial Hexagonal bore rifles were, and are sometimes used with a soft lead bullet which sets up or expands to fill the corners which are not sharp anyway. Quote Link to comment Share on other sites More sharing options...
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